以龙门起重机的单根主梁的重量为目标函数,以主梁上弦杆、主梁下弦杆、主梁斜腹杆、主梁水平腹杆以及主梁宽度和高度为设计变量,采用了种群多样性自适应遗传算法对其结构进行优化,并通过MATLAB平台实现优化程序设计,得到迭代结果图,实验结果表明,该算法有效了克服基本遗传算法局部最优解、早熟和缺乏连续性等问题,加快了收敛速度,更容易达到全局最优解。 Taking the weight of a single main girder of the gantry crane as the objective function, taking the width of the main beam, the lower chord of the main beam, the web of the main girder, the horizontal web of the main girder and the width and height of the main girder as design variables, The results show that this algorithm is effective in overcoming the problems of the local optimal solution, precocity and lack of continuity of the basic genetic algorithm, Speed ​​up the convergence rate, easier to reach the global optimal solution.